React Front End Development for Web Platform

I'm seeking a skilled React developer to implement a new front end for my existing web platform, based on a completed Figma design.

Key Requirements:
- Writing clean, efficient React code
- Implementing user authentication and dynamic content loading
- Incorporating specific animations and transitions including page transitions, hover effects, and loading spinners

Ideal Skills:
- Proficiency in React
- Experience with user authentication and dynamic content loading
- Ability to implement complex animations and transitions

Please provide examples of your previous work with React, particularly any projects involving user authentication and dynamic content loading.